<template>
	<div v-if="isExternal" :style="styleExternalIcon" class="svg-external-icon svg-icon" v-on="$listeners" />
	<svg v-else :class="svgClass" aria-hidden="true" v-on="$listeners">
		<use :xlink:href="iconName" />
	</svg>
</template>

<script>
    import { isExternal } from '@/utils/validate';

    export default {
        name: 'SvgIcon',
        props: {
            iconClass: {
                type: String,
                required: true
            },
            className: {
                type: String,
                default: ''
            }
        },
        computed: {
            isExternal() {
                return isExternal(this.iconClass);
            },
            iconName() {
                return `#icon-${this.iconClass}`;
            },
            svgClass() {
                if (this.className) {
                    return 'svg-icon ' + this.className;
                } else {
                    return 'svg-icon';
                }
            },
            styleExternalIcon() {
                return {
                    mask: `url(${this.iconClass}) no-repeat 50% 50%`,
                    '-webkit-mask': `url(${this.iconClass}) no-repeat 50% 50%`
                };
            }
        }
    };
</script>

<style scoped>
.svg-icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  fill: currentColor;
  overflow: hidden;
}

.svg-external-icon {
  background-color: currentColor;
  mask-size: cover!important;
  display: inline-block;
}
</style>
